<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-12-19</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000026537</issuerCik><issuerName>SENSYTECH INC</issuerName>        <issuerTradingSymbol>STST</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001241361</rptOwnerCik><rptOwnerName>SEMPLE LLOYDE A</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>C/O DYKEMA GOSSETT PLLC</rptOwnerStreet1><rptOwnerStreet2>400 RENAISSANCE CENTER</rptOwnerStreet2><rptOwnerCity>DETROIT</rptOwnerCity><rptOwnerState>MI</rptOwnerState><rptOwnerZipCode>48243</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><derivativeTable><derivativeTransaction><securityTitle><value>Director Stock Option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>14.2200</value></conversionOrExercisePrice><transactionDate><value>2003-12-19</value></transactionDate><deemedExecutionDate><value>2003-12-19</value></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>5000.0000</value></transactionShares><transactionPricePerShare><value>0</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2004-12-15</value></exerciseDate><expirationDate><value>2013-12-19</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>5000.0000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>5000.0000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes></footnotes><remarks></remarks><ownerSignature><signatureName>/s/ Lloyd A. Semple</signatureName><signatureDate>2003-12-19</signatureDate></ownerSignature></ownershipDocument>

